DS26324GNA3+ Maxim Integrated Products, DS26324GNA3+ Datasheet - Page 73

• Manufacturer Part Number: DS26324GNA3+
• Description: IC LIU E1/T1/J1 3.3V 256-CSBGA
• Manufacturer: Maxim Integrated Products
• Type: Line Interface Units (LIUs)r

Specifications of DS26324GNA3+

• Number Of Drivers/receivers: 16/16
• Protocol: LIN
• Voltage - Supply: 3.135 V ~ 3.465 V
• Mounting Type: Surface Mount
• Package / Case: 256-CSBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Register Name:
Register Description:
Register Address (LIUs 1–8):
Bit #
Name
Default
Bit 7: Receiver Transformer Turns Ratio Channel 8 (RTR8). If this bit is set the turns ratio is 1:1 on the receiver
side. This bit should be set when a 1:1 receiver transformer is used. Note that in order to use fully internal receive
impedance termination, a 1:1 transformer must be used and this bit must be set to 1.
Bits 6 to 4: Channel 8 Receive Sensitivity/Monitor Select [2:0] (C8RSM[2:0]). Bits C8RSM[2:0] are used to
select the receiver sensitivity level and the monitor mode resistive gain. See
Bit 3: Receiver Transformer Turns Ratio Channel 7 (RTR7). If this bit is set the turns ratio is 1:1 on the receiver
side. This bit should be set when a 1:1 receiver transformer is used. Note that in order to use the fully internal
receive impedance termination, a 1:1 transformer must be used and this bit must be set to 1.
Bits 2 to 0: Channel 7 Receive Sensitivity/Monitor Select [2:0] (C7RSM[2:0]). Bits C7RSM[2:0] are used to
select the receiver sensitivity level and the monitor mode resistive gain. See
Register Address (LIUs 9–16):
Bit #
Name
Default
Bit 7: Receiver Transformer Turns Ratio Channel 16 (RTR16). If this bit is set the turns ratio is 1:1 on the
receiver side. This bit should be set when a 1:1 receiver transformer is used. Note that in order to use fully internal
receive impedance termination, a 1:1 transformer must be used and this bit must be set to 1.
Bit 6 to 4: Channel 16 Receive Sensitivity/Monitor Select [2:0] (C16RSM[2:0]). Bits C16RSM[2:0] are used to
select the receiver sensitivity level and the monitor mode resistive gain. See
Bit 3: Receiver Transformer Turns Ratio Channel 15 (RTR15). If this bit is set the turns ratio is 1:1 on the
receiver side. This bit should be set when a 1:1 receiver transformer is used. Note that in order to use the fully
internal receive impedance termination, a 1:1 transformer must be used and this bit must be set to 1.
Bits 2 to 0: Channel 15 Receive Sensitivity/Monitor Select [2:0] (C15RSM[2:0]). Bits C15RSM[2:0] are used to
select the receiver sensitivity level and the monitor mode resistive gain. See
Table 6-16. Receiver Sensitivity/Monitor Mode Gain Selection
monitor mode
RECEIVER
DISABLED
No flat gain
No flat gain
MONITOR
Receiver
Flat gain
Flat gain
enabled
MODE
RTR16
RTR8
7
0
7
0
T1/ E1 MODE
CnRSM[2:0],
CnRSM[2:0]
000
001
100
101
C16RSM2
C8RSM2
6
0
6
0
RSMM4
Receive Sensitivity Monitor Mode 4
0Bh
2Bh
Max cable loss
SENSITIVITY
RECEIVER
(MAXIMUM
C16RSM1
C8RSM1
LOSS)
(dB)
22.5
12
18
30
5
0
5
0
DS26324 3.3V, 16-Channel, E1/T1/J1 Short-Haul Line Interface Unit
C16RSM0
C8RSM0
73 of 120
monitor mode
MODE GAIN
gain settings
RECEIVER
SETTINGS
4
0
4
0
MONITOR
Receiver
(dB)
14
20
0
0
RTR15
RTR7
3
0
3
0
DECLARATION
LEVEL
LOSS
Table
Table
Table
Table
C15RSM2
(dB)
45.5
C7RSM2
15
21
37
—
2
0
2
0
6-16.
6-16.
6-16.
6-16.
C15RSM1
C7RSM1
1
0
1
0
C15RSM0
C7RSM0
0
0
0
0